Product
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LP3910
  • LP3910
  • LP3910
  • LP3910

LP3910

ACTIVE

Power Management IC (PMIC) for Hard Drive Based Portable Media Players

Texas Instruments LP3910 Product Info

1 April 2026 1

Parameters

Regulated outputs (#)

4

Step-down DC/DC converter

2

Step-up DC/DC converter

0

LDO

2

Vin (min) (V)

2.5

Vin (max) (V)

6

Vout (min) (V)

0.8

Vout (max) (V)

3.3

Iout (max) (A)

1

Configurability

Factory programmable, Software configurable

Features

Comm control, Enable, Power sequencing

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Step-down DC/DC controller

0

Step-up DC/DC controller

0

Iq (typ) (mA)

0.03

Switching frequency (max) (kHz)

2000

Shutdown current (ISD) (typ) (µA)

30

Switching frequency (typ) (kHz)

2000

Package

WQFN (NJV)-48-36 mm² 6 x 6

Features

  • Two Low-Dropout Regulators With Programmable Output Voltages:
    • LDO1 for General Purpose Applications
    • LDO2 for Low-Noise Analog Applications
  • Green and Red LED-Charger Status Drivers
  • 4-Channel 8-Bit Dual Slope
    Analog-to-Digital (ADC) Converter
  • 2 High-Efficiency DVS Buck Converters
  • Wide Load Range Buck-Boost DC-DC Converter
  • 400-kHz I2C-Compatible Interface
  • Linear Constant-Current and Constant-Voltage Charger for Single-Cell Lithium-Ion Batteries
  • USB and Adapter Charging
  • System Power Supply Management
  • Voltage and Thermal Supervisory Circuits
  • Continuous Battery Voltage Monitoring
  • Interrupt Request Output With 8 Sources
  • 50-mΩ Battery Path Resistance
  • 100-mA to 1000-mA Full-Rate Charge Current Using Wall Adapter
  • Selectable 0.05C and 0.1C End-of-Charge (EOC) Current
  • USB Current Limits of 100, 500, and 800 mA
  • USB Pre-Qualification Current of 50 mA
  • Selectable 4.1-V, 4.2-V or 4.38-V Battery-Termination Voltages
  • 0.35% Battery-Termination Accuracy
  • ±1 LSB INL/DNL on 8-Bit ADC
  • Two Low-Dropout Regulators With Programmable Output Voltages:
    • LDO1 for General Purpose Applications
    • LDO2 for Low-Noise Analog Applications
  • Green and Red LED-Charger Status Drivers
  • 4-Channel 8-Bit Dual Slope
    Analog-to-Digital (ADC) Converter
  • 2 High-Efficiency DVS Buck Converters
  • Wide Load Range Buck-Boost DC-DC Converter
  • 400-kHz I2C-Compatible Interface
  • Linear Constant-Current and Constant-Voltage Charger for Single-Cell Lithium-Ion Batteries
  • USB and Adapter Charging
  • System Power Supply Management
  • Voltage and Thermal Supervisory Circuits
  • Continuous Battery Voltage Monitoring
  • Interrupt Request Output With 8 Sources
  • 50-mΩ Battery Path Resistance
  • 100-mA to 1000-mA Full-Rate Charge Current Using Wall Adapter
  • Selectable 0.05C and 0.1C End-of-Charge (EOC) Current
  • USB Current Limits of 100, 500, and 800 mA
  • USB Pre-Qualification Current of 50 mA
  • Selectable 4.1-V, 4.2-V or 4.38-V Battery-Termination Voltages
  • 0.35% Battery-Termination Accuracy
  • ±1 LSB INL/DNL on 8-Bit ADC

Description

The LP3910 is a programmable system power management unit optimized for HDD-based portable media players. The device incorporates two low-dropout LDO voltage regulators, two integrated buck DC-DC converters with dynamic voltage scaling (DVS), one wide load-range buck-boost DC-DC converter with programmable output voltage, a 4-channel, 8-bit ADC, and a dual-source lithium-ion or lithium-polymer battery charger.

The LP3910 also incorporates some advanced battery management functions such as battery temperature measurement, reverse current blocking for USB, LED-charger status indication, thermally regulated internal power FETs, battery-voltage monitoring, overcurrent protection, and a 10-hour safety timer. The device is programmable through a 400-kHz I2C-compatible interface.

The LP3910 is available in a thermally-enhanced
6-mm × 6-mm × 0.8-mm 48-pin WQFN package.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP3910 is a programmable system power management unit optimized for HDD-based portable media players. The device incorporates two low-dropout LDO voltage regulators, two integrated buck DC-DC converters with dynamic voltage scaling (DVS), one wide load-range buck-boost DC-DC converter with programmable output voltage, a 4-channel, 8-bit ADC, and a dual-source lithium-ion or lithium-polymer battery charger.

The LP3910 also incorporates some advanced battery management functions such as battery temperature measurement, reverse current blocking for USB, LED-charger status indication, thermally regulated internal power FETs, battery-voltage monitoring, overcurrent protection, and a 10-hour safety timer. The device is programmable through a 400-kHz I2C-compatible interface.

The LP3910 is available in a thermally-enhanced
6-mm × 6-mm × 0.8-mm 48-pin WQFN package.

For all available packages, see the orderable addendum at the end of the data sheet.

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